不同基坑开挖组织方式对深基坑变形的影响

Influence of Different Foundation Pit Excavation Organization Modes on Deformation of Deep Foundation Pit

在软土基坑工程中,时空效应对基坑变形有着重要的影响,如何优化基坑开挖的施工组织,利用时空效应为基坑服务是基坑工程的重要课题。两个基本相同的基坑由于采用了不同的基坑开挖组织方式而使得基坑变形差异较大,从时空效应的角度分析了基坑无支撑暴露时间和有支撑暴露时间对变形的影响,为后续开挖施工组织提供经验。

In the soft soil foundation pit engineering,the time-space effect has the important influence on the deformation of foundation pit.How to optimize the construction organization of foundation pit excavation and how to utilize the time-space effect for foundation pit are the important topics of foundation pit engineering.Two basic same foundation pits make the deformations of foundation pits greatly different because of using the different foundation pit excavation organization modes.The article analyzes the influences of free standing exposure duration and standing exposure duration of foundation pit on the deformation from the angle of time-space effect,which provide the experience for the following excavation construction organization.